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Japanese

AN ULTRASTRUCTURAL OBSERVATION ON GRANULOVACUOLAR DEGENERATIONS IN SENILE DEMENTIA, WITH SPECIAL REFERENCE TO THE PROCESS OF THEIR FORMATION Shinsaku Oyanagi 1,2,3 , Fusahiro Ikuta 2 1The Specimen Center for Nervous Diseases and the Department of Experimental Neuropathology 2Brain Research Institute, Niigata University pp.783-788
Published Date 1974/8/1
DOI https://doi.org/10.11477/mf.1406203580
  • Abstract
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Granulovacuolar degenerations from the Ammon's horn of a patient with presenile dementia, which had been fixed at an early autopsy, were examined under the electron microscope. Granulovacuolar degenerations appeared as large vacuoles having undulated membranes closely inside their limiting membranes and central electron dense substances in indifinite shapes and sizes. (Figs. 1,2,4,5 and 6). A small part of the cytoplasm with electron dense material and lysosomes were occasionally observed to be partially or almost completely surrounded by flattened cytoplasmic vacuoles (Figs. 4 & 5). These structural alterations may suggest an early event in the formation of the granulo-vacuolar bodies, which may be followed by digestion of the de-marcated part of the cytoplasm. This process should be comparable to that of autophagocytosis of cells ingeneral.


Copyright © 1974, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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